The power scheme option in power Management is a gray solution

Failure Phenomenon:

Power options in Control Panel are turned on in Microsoft Windows XP computers. However, the power scheme options displayed on the Power Schemes tab are not available.

　　Reason Analysis:

This problem may occur if you delete some or all of the registry keys that are related to the power scheme option.

　　Solution:

Method One: Restore the default power scheme using the Powercfg.exe utility

You can use the Powercfg.exe utility to copy the power scheme from the default user profile to the currently logged-on user. This can be done because the power scheme associated with each user account is unique. To use the Powercfg.exe utility to copy the power scheme from the default user, perform the following steps:

1. Click "Start" and "Run", type cmd, and then click OK.

2. At the command prompt, type the following command and press Enter:powercfg/restoredefaultpolicies

Method Two: Use the Powercfg.exe utility to import power schemes from other Windows XP installations. You can use the Powercfg.exe utility to install from a parallel Windows XP or export a power scheme from another Windows XP computer, and then import it into the original Windows XP installation. To do this, follow these steps:

1. In a new Windows XP parallel installation, or on another Windows XP computer, perform the following steps:

A. Click Start and run, type cmd, and then click OK.

B. At the command prompt, type the following command and press Enter:

Powercfg/export >/file

For example: Powercfg/export demo/file d:123

It means to export the power management scheme named "Demo" and save it to the D disk named 123

2. Copy the saved power management scheme to the failed Windows XP system and do the following:

A. Click Start and run, type cmd, and then click OK.

B. At the command prompt, type the following command and press Enter:

Powercfg/import /file

For example: Powercfg/import demo/file d:123

3. If you want to export and import more power schemes, repeat all previous steps.

4. Verify that the imported power scheme is currently available on the Power Schemes tab.